Signed-off-by: Hans de Goede <hdego...@redhat.com>
---
drivers/ata/ahci_imx.c | 142 +++++++++++++++++++++++++++----------------------
1 file changed, 77 insertions(+), 65 deletions(-)
diff --git a/drivers/ata/ahci_imx.c b/drivers/ata/ahci_imx.c
index 2210866..e58e062 100644
--- a/drivers/ata/ahci_imx.c
+++ b/drivers/ata/ahci_imx.c
@@ -51,6 +51,7 @@ static int ahci_imx_hotplug;
module_param_named(hotplug, ahci_imx_hotplug, int, 0644);
MODULE_PARM_DESC(hotplug, "AHCI IMX hot-plug support (0=Don't support,
1=support)");
+static void imx_ahci_phy_exit(struct ahci_host_priv *hpriv);
static void ahci_imx_host_stop(struct ata_host *host);
static void ahci_imx_error_handler(struct ata_port *ap)
@@ -78,10 +79,8 @@ static void ahci_imx_error_handler(struct ata_port *ap)
*/
reg_val = readl(mmio + PORT_PHY_CTL);
writel(reg_val | PORT_PHY_CTL_PDDQ_LOC, mmio + PORT_PHY_CTL);
- regmap_update_bits(imxpriv->gpr, IOMUXC_GPR13,
- IMX6Q_GPR13_SATA_MPLL_CLK_EN,
- !IMX6Q_GPR13_SATA_MPLL_CLK_EN);
- ahci_platform_disable_clks(hpriv);
+
+ imx_ahci_phy_exit(hpriv);
imxpriv->no_device = true;
}
@@ -98,40 +97,18 @@ static const struct ata_port_info ahci_imx_port_info = {
.port_ops = &ahci_imx_ops,
};
-static int imx_ahci_probe(struct platform_device *pdev)
+static int imx_ahci_phy_init(struct ahci_host_priv *hpriv)
{
- struct device *dev = &pdev->dev;
- struct ahci_host_priv *hpriv;
- struct imx_ahci_priv *imxpriv;
- unsigned int reg_val;
+ struct imx_ahci_priv *imxpriv = hpriv->plat_data;
int rc;
- imxpriv = devm_kzalloc(dev, sizeof(*imxpriv), GFP_KERNEL);
- if (!imxpriv)
- return -ENOMEM;
-
- hpriv = ahci_platform_get_resources(pdev);
- if (IS_ERR(hpriv))
- return PTR_ERR(hpriv);
- if (!hpriv->clks[CLK_AHB]) {
- dev_err(dev, "no ahb clk, need sata, sata_ref and ahb clks\n");
- rc = -ENOENT;
- goto put_resources;
- }
- hpriv->plat_data = imxpriv;
-
- imxpriv->gpr =
- syscon_regmap_lookup_by_compatible("fsl,imx6q-iomuxc-gpr");
- if (IS_ERR(imxpriv->gpr)) {
- dev_err(dev, "failed to find fsl,imx6q-iomux-gpr regmap\n");
- rc = PTR_ERR(imxpriv->gpr);
- goto put_resources;
- }
+ if (imxpriv->no_device)
+ return 0;
if (hpriv->target_pwr) {
rc = regulator_enable(hpriv->target_pwr);
if (rc)
- goto put_resources;
+ return rc;
}
rc = ahci_platform_enable_clks(hpriv);
@@ -144,7 +121,8 @@ static int imx_ahci_probe(struct platform_device *pdev)
* is 0x07ffffff, and the other one write for setting
* the mpll_clk_en.
*/
- regmap_update_bits(imxpriv->gpr, 0x34, IMX6Q_GPR13_SATA_RX_EQ_VAL_MASK
+ regmap_update_bits(imxpriv->gpr, IOMUXC_GPR13
+ , IMX6Q_GPR13_SATA_RX_EQ_VAL_MASK
| IMX6Q_GPR13_SATA_RX_LOS_LVL_MASK
| IMX6Q_GPR13_SATA_RX_DPLL_MODE_MASK
| IMX6Q_GPR13_SATA_SPD_MODE_MASK
@@ -162,9 +140,69 @@ static int imx_ahci_probe(struct platform_device *pdev)
| IMX6Q_GPR13_SATA_TX_ATTEN_9_16
| IMX6Q_GPR13_SATA_TX_BOOST_3_33_DB
| IMX6Q_GPR13_SATA_TX_LVL_1_025_V);
- regmap_update_bits(imxpriv->gpr, 0x34, IMX6Q_GPR13_SATA_MPLL_CLK_EN,
+
+ regmap_update_bits(imxpriv->gpr, IOMUXC_GPR13,
+ IMX6Q_GPR13_SATA_MPLL_CLK_EN,
IMX6Q_GPR13_SATA_MPLL_CLK_EN);
- usleep_range(100, 200);
+
+ usleep_range(1000, 2000);
+ return 0;
+
+disable_regulator:
+ if (hpriv->target_pwr)
+ regulator_disable(hpriv->target_pwr);
+ return rc;
+}
+
+static void imx_ahci_phy_exit(struct ahci_host_priv *hpriv)
+{
+ struct imx_ahci_priv *imxpriv = hpriv->plat_data;
+
+ if (imxpriv->no_device)
+ return;
+
+ regmap_update_bits(imxpriv->gpr, IOMUXC_GPR13,
+ IMX6Q_GPR13_SATA_MPLL_CLK_EN,
+ !IMX6Q_GPR13_SATA_MPLL_CLK_EN);
+ ahci_platform_disable_clks(hpriv);
+
+ if (hpriv->target_pwr)
+ regulator_disable(hpriv->target_pwr);
+}
+
+static int imx_ahci_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct ahci_host_priv *hpriv;
+ struct imx_ahci_priv *imxpriv;
+ unsigned int reg_val;
+ int rc;
+
+ imxpriv = devm_kzalloc(dev, sizeof(*imxpriv), GFP_KERNEL);
+ if (!imxpriv)
+ return -ENOMEM;
+
+ hpriv = ahci_platform_get_resources(pdev);
+ if (IS_ERR(hpriv))
+ return PTR_ERR(hpriv);
+ if (!hpriv->clks[CLK_AHB]) {
+ dev_err(dev, "no ahb clk, need sata, sata_ref and ahb clks\n");
+ rc = -ENOENT;
+ goto put_resources;
+ }
+ hpriv->plat_data = imxpriv;
+
+ imxpriv->gpr =
+ syscon_regmap_lookup_by_compatible("fsl,imx6q-iomuxc-gpr");
+ if (IS_ERR(imxpriv->gpr)) {
+ dev_err(dev, "failed to find fsl,imx6q-iomux-gpr regmap\n");
+ rc = PTR_ERR(imxpriv->gpr);
+ goto put_resources;
+ }
+
+ rc = imx_ahci_phy_init(hpriv);
+ if (rc)
+ goto put_resources;
/*
* Configure the HWINIT bits of the HOST_CAP and HOST_PORTS_IMPL,
@@ -189,15 +227,12 @@ static int imx_ahci_probe(struct platform_device *pdev)
rc = ahci_platform_init_host(pdev, hpriv, &ahci_imx_port_info, 0, 0);
if (rc)
- goto disable_clks;
+ goto phy_exit;
return 0;
-disable_clks:
- ahci_platform_disable_clks(hpriv);
-disable_regulator:
- if (hpriv->target_pwr)
- regulator_disable(hpriv->target_pwr);
+phy_exit:
+ imx_ahci_phy_exit(hpriv);
put_resources:
ahci_platform_put_resources(hpriv);
return rc;
@@ -206,18 +241,8 @@ put_resources:
static void ahci_imx_host_stop(struct ata_host *host)
{
struct ahci_host_priv *hpriv = host->private_data;
- struct imx_ahci_priv *imxpriv = hpriv->plat_data;
-
- if (!imxpriv->no_device) {
- regmap_update_bits(imxpriv->gpr, 0x34,
- IMX6Q_GPR13_SATA_MPLL_CLK_EN,
- !IMX6Q_GPR13_SATA_MPLL_CLK_EN);
- ahci_platform_disable_clks(hpriv);
- }
-
- if (hpriv->target_pwr)
- regulator_disable(hpriv->target_pwr);
+ imx_ahci_phy_exit(hpriv);
ahci_platform_put_resources(hpriv);
}
@@ -225,26 +250,13 @@ static int imx_ahci_suspend(struct device *dev)
{
struct ata_host *host = dev_get_drvdata(dev);
struct ahci_host_priv *hpriv = host->private_data;
- struct imx_ahci_priv *imxpriv = hpriv->plat_data;
int rc;
rc = ahci_platform_suspend_host(dev);
if (rc)
return rc;
- /*
- * If no_device is set, The CLKs had been gated off in the
- * initialization so don't do it again here.
- */
- if (!imxpriv->no_device) {
- regmap_update_bits(imxpriv->gpr, IOMUXC_GPR13,
- IMX6Q_GPR13_SATA_MPLL_CLK_EN,
- !IMX6Q_GPR13_SATA_MPLL_CLK_EN);
- ahci_platform_disable_clks(hpriv);
- }
-
- if (hpriv->target_pwr)
- regulator_disable(hpriv->target_pwr);
+ imx_ahci_phy_exit(hpriv);
return 0;
}
--
1.8.5.3
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